/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  This class is used to mark and seek the inputstream. At present it is

*                implemented to mark and seek to the front of the stream and not anywhere

*                in the middle as the use case only demands such a beahaviour.

*

*/

package com.nokia.microedition.media;

import java.io.IOException;

import java.io.InputStream;

/**

 * Class InputStreamSeekControl used to mark and seek the inputstream

 */

public class InputStreamSeekControl implements SeekControl

{

    private InputStream iInputStream;

    /**

     * Constructor

     */

    public InputStreamSeekControl()

    {

        iInputStream = null;

    }

    /*

     * Constructor

     * @param aInputStream - inputstream used by the InputStream class

     *                       that needs to be marked and streamed

     */

    public InputStreamSeekControl(InputStream aInputStream)

    {

        iInputStream = aInputStream;

        if (iInputStream.markSupported() == true)

        {

            iInputStream.mark(0);

        }

    }

    /*

     * Method seeks to the start of the inputstream.

     * @param aWhere - is ignored as the seeking takes place to

     *                 the begining always

     */

    public void seek(int aWhere) throws IOException

    {

        if (iInputStream.markSupported() == true)

        {

            iInputStream.reset();

        }

    }

    public void close()

    {

        // intentionally left blank

    }

}